Voice/data receiver coupled with a transmission line through an

Wave transmission lines and networks – Coupling networks – With impedance matching

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178 63E, H03H 738

Patent

active

041107110

ABSTRACT:
A transmission line having a fixed characteristic impedance, e.g., 600 ohms, is coupled to a receiver through an input transformer working into a very small impedance, e.g., 10 ohms or less. As compared to a conventional arrangement, where an input transformer works into a load nearly as high as the characteristic impedance of the line, the new arrangement has considerably better low frequency response and delay distortion characteristics. The new arrangement permits a much smaller transformer to be used if desired while retaining favorable low frequency response and delay distortion characteristics.

REFERENCES:
patent: 1752046 (1930-03-01), Whittle
patent: 1836841 (1931-12-01), Dudley
patent: 2194534 (1940-03-01), Van Eldik
patent: 3456206 (1969-07-01), Kwartiroff et al.

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